Ironing machine for coils



Dec. 6, 1932. c. T. RAULE' IRONING MACHINE FOR COILS Filed June 22. 192 2 Sheets-Sh et 1 17am az z TW Dec. 6, 1932. c. T. RAULE IRONING MACHINE FOR 0011.5

Filed June 22. 1927 2 Sheets-Sheet 2 wry Patented Dec. 6, 1932 UNETED STATES PATENT orri'cs. I

momma MACHINE roia coins Application filed June 22,

My invention relates to an ironing device for use in ironing insulated windings of rotor or stator coils and the like.

W A purpose of my invention is to iron a D wound coil or the like between a movable iron and a mold turning with a hollow rotor.

A further purpose is to provide a rigid mold to sustain the coil against the ir ning pressure and thus elimi" ate tendency for distortion caused by the ironing pressure.

A further purpose is to overcome any dififerences in pressure on the opposite sides of the coil section created by gravity during the revolution of the iron.

A further purpose is to make the mold carry the entire ironing pressure; at no time transmitting any of this pressure to the coil supports.

A further purpose is to provide a continuous positive drive for the iron and mold without necessity of using a pair of timed gearn.

A further purpose is to supply current to the heating elements of the iron andmold by r means of circumferentially open rings and brushes.

Further purposes will appear in the specification and in the claims.

I have elected to show one only of the different forms of my invention, selecting a form that is convenient and efiicient in operation and which well illustrates the principles involved.

Figure 1 is an end elevation of av machine embodying my invention, shown in operation upon a stator coil, the coil being sectioned.

Figure 2 is a broken front elevation of the structure of Figure 1.

Figures 3 and 4; are fragmentary end elevatic-ns corresponding generally to Figure 1 but with the rotor in different posl ions.

Like numerals refer to like parts in all figures.

Describing in lustration and not in limitation and referring to the drawin 's:-

' Spaced coaxial hollow rotors and 11 carry cooperating ironing member 12 a d mold 13, 7A around andareund the portion 15 of a stator coil or the like to q ironed hereinafter called the work.

The mold member 13, 14, shown in my 1927. Serial N0. 200,559.

illustration as two pieces may also be made of one or a greater number than two pieces. Thework'15 is placed betwee'n'the iron and the mold parallel to the axis of the rotors and is suitably supported near the longitudinal axis of the center of gravity of the entire coil by the support 67, free to oscillate in directions radial of the rotor axis.

The mold bracket 17 carrying the mold 13-. la is rigidly and adjustably clampedfast with respect to the rotor,lwhile the iron member 12 is free to yield outwardly but continuously resiliently presses inward against the worlrtoward the open angle formed by the 6 sides of the mold. 5

The inward pressure ofthe iron 12 maintains the work against the mold.

The rotors are laterally open at 18 and in turning are supported by casings '20, which w are bored at 21 and countenbored at 22.

The bore 21 is sufiiciently large to clear the studs 23 which extend rearwardly from the rotor and support a'sprock'et'wheel 24' for driving the rotor5 and the counterbore fits a flange portion 25bit the rotor, thus forming the rotor journal.- i

Removable straps or buttons 26* project radially inward from the casing, overlapping the flange 25, to keep the rotor from moving p longitudinally from its casing. U

The bases 27 of the casings are adjustable along a supporting bed 28, V rails 29 of the bed registering with V grooves 30 of the cas ings. The latter are fastened at any desired n settings along the bed by nuts and bolts 31, carried by the casings and reaching'down into a longitudinal slot 32' of the bed.

Each casing journals sprocket wheels 34 and 35 upon opposite sides of the bed in the plane of the sprocket wheel 24 upon the'roto-r.

The sprocket wheels 34 are splined upon a drive shaft 36 which is supported in bracket bearings 37 and 38 upon opposite ends of the bed, while the wheels 35 are mounted on'eccentric stud bearings 39, (for the purpose of adjustment) which in turn are inserted into the respective casings.

The sprocket wheels 34' and 35 carry a sprocket chain 40 which meshes with and I 7 do drlves the wheel Qt along an arc of engage- .ment longer than the length of the opening 18. The eccentric adjustment of the position of the wheel 35, of any usual or suitable type, permits adjusting the tightness of the chain.

The shaft 36- is extended at one end to carry the main drive pulley 41, which is belt driven'from any suitable source to operate the rotors.

I preferably heat the iron 12 and mold 18 electrically and to this end one of the rotor elements has a cylindrical portion 42 carrying circumferential electrical contact members 43 and 44, which are in effect collector rings for feeding electrical: resistance heatlng elements located in or on theironand mold. c

These contact members are suitable metal rings electrically insulated from the rotor support and open at 18 to passthe work.

They are connected to'any suitable outside source of current by means of sliding contacts 48 and 49 in a stationary housing 50 on the casing. c.

The sliding contacts arespring-pressed at 51 to engage the rings and are long enough to span theopening at 18 so as not to break circuit at this point, the forward end of a sliding contact passing the openingand engaging the forward end of the open ring before the rear end of the sliding contact reaches the opening and'leave s the rear endv of the ring. 1 I The bracket 17 presents fiat supporting faces 52 and 53 to mold 13, 14 in planes par allel to the axis of rotation. V 7

These faces make an open angle, a bisecting line of this "anglenormally passing through the axis of rotation. r

Each bracket is supported upon a radially outwardly extending base 54 which is rigidly clamped to the rotor by screws55.

- The screws pass through slot perforations -56 of the base to 'make'thebracket radiall adjustable with respect tothe axis. I

The radial position of thebracket 17. is selected so as to govern the amount of swing of'the iron 12 about pivot 62. This swing will differ with the sectional form and size ofthe work and isadjusted by the radial position of theseb'rac'kets.

I The brackets 57 and 58 support the iron 12.

These resiliently press inwardlytoward the open angleof themold. Eachcomprises a shoeportion59ito which the iron is fastened by suitable screws 60, and an outwardlyand inwardly slotted base61 upon a supporting pivot pin 62 through the slot into the-rotor;

The slotted base extends outwardly some distance and a spring 63 is stretched between an anchor 64at the outer end ofthe base and the pivot 62, thus pressing the brackets inward toward the mold but at the same time permitting the mold-and-bracketsto swing about the pivot 62. In mid swing, brackets 58 Wlll present the effective face of the iron longed-portions of each revolution, the ironing surface sliding over the fiat surface of the work. while the two surfaces are coincident. I 'i -Radial yielding to accommodate the positionof one bracket to the stationary position of another may be either at the mold 13, 14 or at the iron 12 as .desired. Theangular yielding, however,-will be advantageous with the iron only, the purpose of this yielding being to permit-coincidence between the ironing' surfaces of the work for some time while each work surface is passing the iron. Figures 3 and/4 show'the'ir'oning member and mold indifferent positions from that of Figure 1. V

The iron; engages the work, where it is nearest the pivot 62, Because of friction there is: some lag from contact with the work along the face of the iron, the ironing member being retarded somewhat by friction'from its position of stable equilibrium. When the spring pressure overcomes the frictional'resistancethe iron slides forward over the face of the work tending to establish equilibrium and producing a desirablesliding ironing action while at the same timethe work 15 is supported by themold.

The rotors may support individual sets of coaxial short :irons and molds for ironing separate short work members, or as is more usually the case, the rotors may cooperate to support and rotate a long iron and mold members to iron long coils,'each rotor supporting one end of the set.

Inoperation the rotor is first turned so that the open part 18 of the rotor registers with an opening 66' in the top of the rotor casing. The bracket supporting the iron 12 being is now inserted laterally through the openings 66 and 18 and placed between the iron and the mold. Theiron is then released to makejcon'tact with the work. 7

Before the work has been inserted it may be supported near its longitudinal gravity axis so that the work portion of the coil is substantially relieved from anytendency to go up or down except in response to the action of the machine.

I usually prefer to suspend the coil from overhead by" hook andchain as indicated at 67. Obviously, however, thesupport maybe suspended from the frame of themachine if pulled radially outward, the part of the coil to be ironed I have shown one set of contact rings only for feeding the heating elements. Ordina rily one set will be suflicient.

These may be supplied with current from the single set of contact rings and cooperating sliding contacts, as the rotors turn together and may be considered as the longitudinally adjustable heads of a single rotor unit. If desired each rotor may be provided with contact feed rings.

In *iew of my invention and (.isclosure varia tions and modifications b0 meet individual whim or particular need will doubtless become evident to others skilled in the art, to obtain all or part of the benefits of my invention without copy the structure shown, and I, therefore, claim all such in so far as they fall within the reasonable spirit and scope of my invention.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. The method of ironing a bar or the like which consists in revolving ironing devices about the work while maintaining one angularly fixed and the other angularly movable with respect to the axis of revolution and accommodating the work to the devices by movement within a plane.

2. In the art of ironing a coil, the novelty which consists in revolving about the coil a movable ironing pressure member and a relatively immovable abutment therefor adapted to furnish the reaction pressure and in permitting the coil to slide to bodily adjust its position between the pressure member and abutment.

3. In the art of ironing a coil, the novelty which consists in relatively turning the coil on the one part and an angularly movable pressure member and an abutment fixed relatively to the angular movement of the pressure member on the other part, and in accommodating the pressure member to the coil as the turning takes place by angular movement of the pressure member.

4. In an ironing device for a coil or the like, a rotor open laterally to pass the coil and cooperating ironing and mold members mounted to revolve with the rotor while engaging difi'erent sides of the coil, one of said members being pivoted and the other angularly fixed and one radially movable and spring-pressed inwardly and the other radially fixed with respect to the rotor.

5. In an ironing device for a stator coil or the like, a hollow rotor open laterally to rece'ive a coil parallel to the-rotor axis, co-

operating ironing and mold .members, 2 one presenting one iface and the other a plurality-of faces to diflernt sides-of the coil, one

of said members bein pivoted and the "other one ang ularly fixed and one beingra'dially :movable andspring-pressed inwardly with respect to the rotor, and a mounting for the coil-adapting it to oscillation during iron- 6: In an ironing-device for a coil or'the like; a hollow rotor open laterally toreceive acoil along the rotor a xis, a plura'l faced mold memberfa-stened to the rotor and adapted to present its faces to the coil, an ironing mem-.

ber pivotally mounted and radially movable with respect to the rotor, means for pressing the cooperating member inwardly against the coil substantially in a line through its pivot, and a mounting for the coil adapting the coil to oscillation during ironing.

7. In an ironing device for a coil or the like, a hollow rotor open laterally to receive a coil parallel to the rotor axis, a plural faced mold member radially adj ustably fastened to the rotor adapted to present its faces to the coil and an ironing member pivotally mounted and radially movable with respect to the rotor, means for pressing the ironing member inwardly against the coil substantially in a line through its pivot, and a mounting for the coil adapting the coil to oscillation during ironin V 8. In an ironing device for a coil or the like, a supporting framework, a rotor mounted thereon open laterally to receive the coil parallel to the rotor axis, a driven wheel fastened thereto having a lateral opening in angular registry with the rotor opening, a belt or chain engaging an arc of the driven wheel wider than the opening, spaced driving wheels supporting the belt or chain and means for revolving one of the driving wheels.

9. In an ironing device for a coil or the like, a supporting framework, a rotor mounted thereon adapted in operation to enclose the coil and open laterally to receive the coil with its axis parallel to the rotor axis, mold and ironing members mounted on the rotor, electrical heating elements thereon, electrical contact members placed circumferenti ally around the rotor except at the lateral opening and connected with the heating element, cooperating sliding contacts having an arc of contact wider than the opening, and electrical connections to the said cooperating contacts.

10. In an ironing device for acoil or the a like, a hollow rotor, an ironing abutment carried by the rotor fixed with respect to it and having ironing surfaces at an angle to each other, an ironing member pivotally car ried by the rotor and adapted to shift anguan I larly as it revolves with rotation ofthe rotor V and driving means for the rotor.

11. In an ironing device for a; coil orthe 7 like, a hollow rotor through which the coil is adapted to bepassed, an abutment carried by the rotor comprisingone ironing member and having tWo ironing faces at an angle to each other, a second ironing member carried by the rotor, one of the ironing members being movable toward the other and pivoted with respect to the other and a support for the coil or the like, permitting-movement of the coil as the rotor turns.

CLIFFORD IT. RAULE. 

